原型:int strcmp ( const char * str1, const char * str2 ); 功能:Compare two strings //比较两个字符串 返回值:Returns an integral value indicating the relationship between the strings 就是说,返回一个整型值来表示两字符串的关系 自己实现: intmy_strcmp(constchar*str1,constchar*str2){if(str1...
{ return 1; } } int main() { char str1[] = "abc"; char str2[] = "def"; int result = compareStrings(str1, str2); if (result < 0) { printf("str1 小于 str2\n"); } else if (result > 0) { printf("str1 大于 str2\n"); } else { printf("str1 等于 str2\n"); ...
I am trying to figure out how to use qsort with an array of strings. My code looks like this. char words[500][256]; int numOfWords; // this is calculated above int sortWordList() { int length = sizeof(words) / sizeof(char *); qsort(words, length, sizeof(char*), compare);...
This article will introduce multiple methods about how to compare strings in C. Use the strcmp Function to Compare Strings The strcmp function is the standard library feature defined in the <string.h> header. C-style strings are just character sequences terminated by the \0 symbol, so the fu...
int result = compare_strings(str1, str2); return 0; } 这个函数使用了C标准库中的strcmp()函数来比较两个字符串。如果两个字符串相等,strcmp()函数返回0,否则返回一个非零值。这个函数根据strcmp()函数的返回值来输出相应的信息,并返回比较结果。在主函数中,我们声明两个字符串,并调用这个函数来比较它们。
( const char *lhs, const char *rhs );//Returns negative value if lhs appears before rhs in lexicographical order,//Zero if lhs and rhs compare equal.//and Positive value if lhs appears after rhs in lexicographical order.std::cout<<std::endl;std::cout<<"std::strcmp: "<<std::endl;...
另一个功能强大的比较函数是成员函数compare()。他支持多参数处理,支持用索引值和长度定位子串来进行比较。他返回一个整数来表示比较结果,返回值意义如下:0-相等〉0-大于 <0-小于。举例如下: string s(“abcd”); s.compare(“abcd”); //返回0
// This method accepts two strings the represent two files to// compare. A return value of 0 indicates that the contents of the files// are the same. A return value of any other value indicates that the// files are not the same.privateboolFileCompare(stringfile1,stringfile2){in...
C has strcmp() function that is used to compare two strings. It will return zero if two strings are equal non zero when not. Share Improve this answer Follow answered Apr 2, 2019 at 17:37 Vaibhav 54644 silver badges1111 bronze badges Add a comment 0 Here is the loop() code fro...
int compare(int pos, int n,const char *s, int pos2) const; compare函数在>时返回1,<时返回-1,==时返回0 string的子串: string substr(int pos = 0,int n = npos) const;//返回pos开始的n个字符组成的字符串 string的交换: void swap(string &s2); //交换当前字符串与s2的值 ...